diff --git a/openair2/F1AP/lib/CMakeLists.txt b/openair2/F1AP/lib/CMakeLists.txt
index cb8d8b9712..0c6137dc30 100644
--- a/openair2/F1AP/lib/CMakeLists.txt
+++ b/openair2/F1AP/lib/CMakeLists.txt
@@ -8,3 +8,7 @@ target_include_directories(f1ap_lib PUBLIC
                            ${CMAKE_SOURCE_DIR}
                            ${CMAKE_CURRENT_SOURCE_DIR}
 )
+
+if(ENABLE_TESTS)
+  target_compile_definitions(f1ap_lib PRIVATE ENABLE_TESTS)
+endif()